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Full Discussion: Malloc problem with fread() to read file to structure in C
Top Forums Programming Malloc problem with fread() to read file to structure in C Post 302887790 by yifangt on Monday 10th of February 2014 09:39:52 PM
Old 02-10-2014
Just in case I forgot some lines that may have been modified, here I copy and paste the same code of my post #8 and compile in another PC with same Ubuntu:
Code:
yifangt@box $ gcc -o readf -Wall readfile.c  
yifangt@box $ ./readf 

24 bytes allocated at 0x1797250 for linked list element
7 bytes allocated at 0x1797270 for name Angola

24 bytes allocated at 0x1797290 for linked list element
10 bytes allocated at 0x17972b0 for name Bangalore

24 bytes allocated at 0x17972d0 for linked list element
6 bytes allocated at 0x17972f0 for name Cairo

24 bytes allocated at 0x1797310 for linked list element
7 bytes allocated at 0x1797330 for name Dallas

24 bytes allocated at 0x1797350 for linked list element
9 bytes allocated at 0x1797370 for name Edmonton

24 bytes allocated at 0x1797390 for linked list element
6 bytes allocated at 0x17973b0 for name Fargo

24 bytes allocated at 0x17973d0 for linked list element
8 bytes allocated at 0x17973f0 for name Georgia

24 bytes allocated at 0x1797410 for linked list element
8 bytes allocated at 0x1797430 for name Halifax

24 bytes allocated at 0x1797450 for linked list element
13 bytes allocated at 0x1797470 for name Indianapolis

24 bytes allocated at 0x1797490 for linked list element
8 bytes allocated at 0x17974b0 for name Jamaica

End-of-file found on input.

Printing list element located at 0x1797250:
roll_num: 10001    name: Angola
roll_num: 24736352    name: Bangalore
roll_num: 24736416    name: Cairo
roll_num: 24736480    name: Dallas
roll_num: 24736544    name: Edmonton
roll_num: 24736608    name: Fargo
roll_num: 24736672    name: Georgia
roll_num: 24736736    name: Halifax
roll_num: 24736800    name: Indianapolis
roll_num: 24736864    name: Jamaica

This is almost the same of your output of post #9, that roll_num are wrong except the first one, very similar to post #6 where the first half was not shown. I will try more test. Anyway, gdb is the another one that I am trying to get familiar with at the meantime.
And thank you pointing out that I'm not doing anything with atoi() , calloc() , exit() , fclose() , ferror() , fgets() , fopen() , fprintf() , free() , malloc() , printf() , strlen() , or strncpy() that should behave differently on OS X than it should on any Linux distribution. which I have no experience how they may cause difference.
 

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LEARN ABOUT DEBIAN

colorgccrc

COLORGCCRC(5)							File Formats Manual						     COLORGCCRC(5)

NAME

       colorgccrc - configuration file for colorgcc

DESCRIPTION

       A colorgccrc configuration file is used to configure the highlighting of the compiler output from colorgcc.

SYNTAX

       Each  line  consists  of  a  keyword  designating  a configuration variable.  The keyword is followed by `:' and then one or several values
       (depending on the keyword).  Lines beginning with a hash mark `#' are comments.

CONFIGURATION VARIABLES

       g++ | gcc | c++ | cc | g77 | gcj | gnat | gpc
	      Specifies the paths to the compilers.  Takes one value; a path to the compiler.

       nocolor
	      Specifies what terminal types colorization should be disabled on.  Takes one or several values, separated by whitespace.

       srcColor
	      Specifies the highlighting attributes source-code should be given.  Takes one or several color attributes.  See  the  section  COLOR
	      ATTRIBUTES for more information.

       introColor
	      Specifies  the  highlighting  attributes	for normal compiler output.  Takes one or several color attributes.  See the section COLOR
	      ATTRIBUTES for more information.

       warningFileNameColor | errorFileNameColor
	      Specifies the highlighting attributes for the filename in a  warning  or	an  error,  respectively.   Takes  one	or  several  color
	      attributes.  See the section COLOR ATTRIBUTES for more information.

       warningNumberColor | errorNumberColor
	      Specifies  the  highlighting  attributes	for  the  line-number  in a warning or an error, respectively.	Takes one or several color
	      attributes.  See the section COLOR ATTRIBUTES for more information.

       warningMessageColor | errorMessageColor
	      Specifies the highlighting attributes for the message-text in a warning or an error,  respectively.   Takes  one	or  several  color
	      attributes.  See the section COLOR ATTRIBUTES for more information.

COLOR ATTRIBUTES

       The following attributes are valid for highlighting.

       clear, reset

       bold, underline, underscore, blink, reverse, concealed

       black, red, green, yellow, blue, magenta, cyan, white

       on_black, on_red, on_green, on_yellow, on_blue, on_magenta, on_cyan, on_white

SEE ALSO

       gcc(1), colorgcc(1)

HISTORY

       Jan 15 2003: Initial version of this manual-page.

REPORTING BUGS

       Report bugs to <jmoyers@geeks.com>

AUTHORS

       Jamie Moyers <jmoyers@geeks.com> is the author of colorgcc.

       This  manual  page  was	written  by Joe Wreschnig <piman@sacredchao.net>, and modified by David Weinehall <tao@debian.org>, for the Debian
       GNU/Linux system (but may be used by others).

COPYRIGHT

       Copyright (C) 2003 Jamie Moyers
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

								   Jan 15, 2003 						     COLORGCCRC(5)
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